Ryan Chilson
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View article: Absolute Flux Density Calibration of the Greenland Telescope Data for Event Horizon Telescope Observations
Absolute Flux Density Calibration of the Greenland Telescope Data for Event Horizon Telescope Observations Open
Starting from the observing campaign in April 2018, the Greenland Telescope (GLT) has been added as a new station of the Event Horizon Telescope (EHT) array. Visibilities on baselines to the GLT, particularly in the North-South direction, …
View article: The Greenland Telescope: Construction, Commissioning, and Operations in Pituffik
The Greenland Telescope: Construction, Commissioning, and Operations in Pituffik Open
In 2018, the Greenland Telescope (GLT) started scientific observation in Greenland. Since then, we have completed several significant improvements and added new capabilities to the telescope system. This paper presents a full review of the…
View article: A ring-like accretion structure in M87 connecting its black hole and jet
A ring-like accretion structure in M87 connecting its black hole and jet Open
The nearby radio galaxy M87 is a prime target for studying black hole accretion and jet formation 1,2 . Event Horizon Telescope observations of M87 in 2017, at a wavelength of 1.3 mm, revealed a ring-like structure, which was interpreted a…
View article: Electronics Instrumentation for the Greenland Telescope
Electronics Instrumentation for the Greenland Telescope Open
The Greenland Telescope project has recently participated in an experiment to image the supermassive black hole shadow at the center of M87 using Very Long Baseline Interferometry technique in April of 2018. The antenna consists of the 12-…
View article: First 230 GHz VLBI fringes on 3C 279 using the APEX Telescope
First 230 GHz VLBI fringes on 3C 279 using the APEX Telescope Open
Aims. We report about a 230? GHz very long baseline interferometry (VLBI) fringe finder observation of blazar 3C 279 with the APEX telescope in Chile, the phased submillimeter array (SMA), and the SMT of the Arizona Radio Observatory (ARO)…